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Secure Short Hierarchical Identity-Based Signature in the Standard Model

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4 Author(s)
Leyou Zhang ; Dept. of Math. Sci., Xidian Univ., Xi'an, China ; Yupu Hu ; Qing Wu ; Xu'an Tian

In this paper, a new identity-based signature (HIBS) scheme is proposed. Our new scheme has some advantages over the available schemes: the private keys size shrinks as the identity depth increases and the signature size is a constant as it consists of three group elements. Furthermore, under the selective-identity security model, we reduce its security to the l-CDH problem. This assumption is more natural than many of the hardness assumptions recently introduced to HIBS in the standard model.

Published in:

Networks Security Wireless Communications and Trusted Computing (NSWCTC), 2010 Second International Conference on  (Volume:1 )

Date of Conference:

24-25 April 2010